Trimester 2
Week 17
About the size of
a pear
~13 cm~140 g
Averages only: a scan is the only way to know your baby’s size.
Your baby this week
Fat stores begin forming under the skin, and the umbilical cord thickens and strengthens.
What you may feel
Your centre of gravity is shifting, which can affect balance. Backache often begins around now.
This week, try
Swap high heels for supportive flat shoes. Balance changes faster than most people expect.
Weeks are counted from the first day of your last period, as your care team counts them. Written by The Childhood Journal’s team from standard prenatal references. Not yet reviewed by a clinician: our scientific board is being formed. General information, never an assessment of your pregnancy.